[FFmpeg-user] Why is length and bitrate zero?

[Michael Heuberger]

True, SM player always reports 0 for bitrate. I ll raise this with them 
then.

But regarding the length, that still doesn't look right. Can you check 
the lengths again with your random ones?

- Michael


On 20/12/16 12:49, Moritz Barsnick wrote:
> On Mon, Dec 19, 2016 at 23:21:56 +1300, Michael Heuberger wrote:
>> $ ffmpeg -f lavfi -i testsrc=d=10 -pix_fmt yuv420p -vcodec libvpx out1.mkv
>> resulted into a video whose length is 00:00:10 but with a bitrate of 0
>> kbps (says my SMPlayer)
> But says neither ffprobe nor mediainfo. IIRC, the overall bitrate is encoded
> in the MKV header, but there's no per-stream info available. Perhaps
> *that*'s smplayer's issue. Are you sure that smplayer reports anything
> *else* than 0 for any MKV file at all? I just tried a few random ones,
> and they all report 0.
>
> Moritz
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